You crushed us to build your monarchy on the backs of our blood and bone. Your mistake wasn’t keeping us alive. it was thinking we’d never fight back.
Children of Blood and Bone is a rather good book. You have a West African world one generation removed from a genocide which managed to take magic from the world. Radically oppressed former magic users with pockets of resistance here and there–and a main character tossed headfirst into the struggle to return their power.